纤维及矿物掺合料对超高性能混凝土拉伸性能的影响  

Effect of fiber and mineral admixtures on tensile properties of UHPC

作　　者：池商林 CHI Shangling

机构地区：[1]福建省建筑科学研究院有限责任公司、福建省绿色建筑技术重点实验室,福建福州350108

出　　处：《福建建设科技》2025年第2期65-68,共4页Fujian Construction Science & Technology

基　　金：福建省科技计划引导性(重点)项目(2022Y0045)。

摘　　要：通过直接拉伸试验探究了钢纤维与POM纤维的掺量以及矿物掺合料对超高性能混凝土(UHPC)拉伸性能的影响。结果表明:UHPC的抗拉强度随着纤维掺量的增加而增大,随着矿物掺合料的增加而降低。其中,钢纤维对UHPC抗拉强度的提升效果最大,粉煤灰对于UHPC抗拉强度的影响强于矿渣。纤维的掺入能够提升UHPC的韧性,而矿物掺和料会降低UHPC的韧性。In this paper,the effects of steel fiber and POM fiber content and mineral admixtures on the tensile properties of ultra-high performance concrete(UHPC)were investigated by direct tensile test.The results show that the tensile strength of UHPC increases with the increase of fiber content and decreases with the increase of mineral admixture.Among them,steel fiber has the greatest effect on the tensile strength of UHPC,and fly ash has a stronger effect on the tensile strength of UHPC than slag.The incorporation of fibers can improve the toughness of UHPC,while mineral admixtures reduce the toughness of UHPC.

关 键 词：钢纤维 POM纤维 矿物掺合料 超高性能混凝土 拉伸性能 

分 类 号：TU528.572[建筑科学—建筑技术科学]